Polydora cf. websteri Hartman 1943

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Status

Pest, Alien

Description

Prostomium weekley incised. P_cf_websteri_frontpage_watermarked2 pairs of eyes in juveniles may be lost with age. No pigmentation, except faint line along feeding groove. Modified spines on chaetiger 5 falcate hooks with accessory tooth. Bidentate hooded hooks start on chaetiger 7, 8-10 hooks per ramus. Branchiae start on chaetiger 7. No specialized notochaetae on posterior chaetigers. Pygidium large, saucer-shaped, dorsally incised.

30 mm for 100 segments

Distribution
South Africa: Northwestern, southwestern and southeastern coasts. Namibia
East and west coasts of USA (Type locality Connecticut), Hawai’i, Australia, New Zealand, Japan, Korea, Brazil, Venezuela, Mexico

Ecology
Only boring into farmed oysters.

Note
Identity needs to be clarified, molecular evidence and distribution indicates that it is alien.

Citation: Simon C. A. and van Niekerk S. E. (2012), Polydora cf. websteri Hartman 1943 modified May 2015, The Simon Polychaete Lab- http://thesimonpolychaetelab.com/polydora-cf-calcarea/, Date Accessed:June 24, 2019.